Thank you AJ I am afraid you are right. I am crazy about not hearing anything. I have gone to extremes to be sure I don't. As it is I still hear the wave box at times and it dies make me crazy. I think those are great pumps but I heard the low growl a while ago and I know it would not work for me. You guys without this mental issue are Lucky.

Tom way to go. It's funny but I used to have 5 pumps in my tank and now only run 2 6102s. Corals grow just fine and the flow is even better as I have some spots with low flow and some with high. It allows you to keep different corals. The wave box does help appreciable.